Trijicon Sig Sauer Bright & Tough Night Sight Set (Yellow Rear) Black Sig sauer bright & tough night sight set with yellow rear/fits: Sig sauer models calibrated for 9mm and .357SIG, including P225, P226, P228, P239, and P320 (excluding P938) 8 front sight and #8 rear sight Machined steel construction Extra large front dot/tritium-illumination technology Self-illuminating/no batteries require